c - 我怎样才能改变这个脚本

Question

所以我有这个脚本来检查一个数字是否是我期望的数字。但我想直接用C程序输出来测试它，而不是将结果存储在文件中。

#!/bin/bash
j=0;
for i in {1..100};
do ./a.out > output;
cmp expected output || let "j+=1";
done
echo $j; 

./a.out 是指打印数字的程序。我想检查它是否与预期存储的相同但不使用文件

Answer 1

这对我来说效果很好(通过用简单的 echo 脚本替换 a.out):

#!/bin/bash
j=0;
for i in {1..100};
cmp expected <(./a.out) || let "j+=1";
done
echo $j; 

男人 bash :

Process Substitution
Process substitution allows a process's input or output to be referred to using a filename. It takes the form of <(list) or >(list). The process list is run asynchronously, and its input or output appears as a filename.